cc.mallet.fst

Class MEMMTrainer

java.lang.Object

cc.mallet.fst.TransducerTrainer

cc.mallet.fst.MEMMTrainer

public class MEMMTrainer
extends TransducerTrainer

Trains and evaluates a MEMM.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	MEMMTrainer.MEMMOptimizableByLabelLikelihood Represents the terms in the objective function.

Nested classes/interfaces inherited from class cc.mallet.fst.TransducerTrainer

TransducerTrainer.ByIncrements, TransducerTrainer.ByInstanceIncrements, TransducerTrainer.ByOptimization

Constructor Summary

Constructors

Constructor and Description
MEMMTrainer(MEMM memm)

Method Summary

Modifier and Type	Method and Description
int	getIteration()
MEMMTrainer.MEMMOptimizableByLabelLikelihood	getOptimizableMEMM(InstanceList trainingSet)
Transducer	getTransducer()
boolean	isFinishedTraining()
void	printInstanceLists()
boolean	train(InstanceList training) Trains a MEMM until convergence.
boolean	train(InstanceList training, InstanceList validation, InstanceList testing, TransducerEvaluator eval, int numIterations, int numIterationsPerProportion, double[] trainingProportions) Not implemented yet.
boolean	train(InstanceList training, int numIterations) Trains a MEMM for specified number of iterations or until convergence whichever occurs first; returns true if training converged within specified iterations.
boolean	trainWithFeatureInduction(InstanceList trainingData, InstanceList validationData, InstanceList testingData, TransducerEvaluator eval, int numIterations, int numIterationsBetweenFeatureInductions, int numFeatureInductions, int numFeaturesPerFeatureInduction, double trueLabelProbThreshold, boolean clusteredFeatureInduction, double[] trainingProportions, java.lang.String gainName) Not implemented yet.

Methods inherited from class cc.mallet.fst.TransducerTrainer

addEvaluator, addEvaluators, removeEvaluator

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MEMMTrainer

public MEMMTrainer(MEMM memm)

Method Detail

getOptimizableMEMM

public MEMMTrainer.MEMMOptimizableByLabelLikelihood getOptimizableMEMM(InstanceList trainingSet)

train

public boolean train(InstanceList training)

Trains a MEMM until convergence.

Overrides:

train in class TransducerTrainer

train

public boolean train(InstanceList training,
                     int numIterations)

Trains a MEMM for specified number of iterations or until convergence whichever occurs first; returns true if training converged within specified iterations.

Specified by:

train in class TransducerTrainer

train

public boolean train(InstanceList training,
                     InstanceList validation,
                     InstanceList testing,
                     TransducerEvaluator eval,
                     int numIterations,
                     int numIterationsPerProportion,
                     double[] trainingProportions)

Not implemented yet.

Throws:

java.lang.UnsupportedOperationException

trainWithFeatureInduction

public boolean trainWithFeatureInduction(InstanceList trainingData,
                                         InstanceList validationData,
                                         InstanceList testingData,
                                         TransducerEvaluator eval,
                                         int numIterations,
                                         int numIterationsBetweenFeatureInductions,
                                         int numFeatureInductions,
                                         int numFeaturesPerFeatureInduction,
                                         double trueLabelProbThreshold,
                                         boolean clusteredFeatureInduction,
                                         double[] trainingProportions,
                                         java.lang.String gainName)

Not implemented yet.

Throws:

java.lang.UnsupportedOperationException

printInstanceLists

public void printInstanceLists()

getIteration

public int getIteration()

Specified by:

getIteration in class TransducerTrainer

getTransducer

public Transducer getTransducer()

Specified by:

getTransducer in class TransducerTrainer

isFinishedTraining

public boolean isFinishedTraining()

Specified by:

isFinishedTraining in class TransducerTrainer